Portion of a shoe upper



FIG. 1 is a perspective view of the portion of a shoe upper showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a front elevational view thereof.

Broken lines in the figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a portion of a shoe upper, as shown and described. 